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Magnitude and Rate of Environmental Change -Example of Yangtze Delta During the last 20000 Years-

Research Project

Project/Area Number 10680105
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 自然地理学
Research InstitutionDepartment of Management Information, Osaka College (1999-2000)
Nihon University (1998)

Principal Investigator

WADA(ITOTA) Chizu (1999-2000)  Department of Management Information, Osaka College Lecture, 経営情報学科, 助教授 (80246800)

田場 穣 (1998)  日本大学, 文理学部, 教授 (20059439)

Co-Investigator(Kenkyū-buntansha) ENDO Kunihiko  College of Humanities and Sciences, Nihon University Department of Geosystem Sciences, Professor, 文理学部, 教授 (70059781)
辻 誠一郎  国立歴史民俗博物館, 助教授 (20137186)
糸田 千鶴  大阪短期大学, 専任講師 (80246800)
片瀬 隆雄  日本大学, 生物資源科学部, 教授 (70070696)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2000: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1999: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1998: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsEnvironmental Changes / Yangtze Delta / Diatom Analysis / Foraminiferal analysis / Pollen Analysis / Paleomagnetic analysis / Holocene Transgression / Borehole core
Research Abstract

Magnitude and rate of environmental changes in terrestrial areas, and their response to the global environmental changes were investigated in the field of Yangtze Delta and its surroundings. Various kinds of environmental analyses were done for the sediment cores taken from Taihu Lake and the surrounding areas in the southwest part of Yangtze Delta, to accumulate fundamental data which are useful for clarifying the rate of environmental changes. Age determination is based on radiocarbon dating and paleomagnetic secular variation curves correlated with the standard curve of Japanese Islands (Hyodo et al., 1993). In order to make the paleoenvironments clear, fossil analyses such as pollen, diatom, foraminifer, and molluscs, measurement of magnetic susceptibility and soil color, and grain size and chemical analyses were performed.
From the results of analyses mentioned above it is concluded that sea water invaded into Taihu Lake area before 10000 years ago, probably in the latest Pleistocene and sea transgression occurred again in Taihu in the early to middle Holocene from Hanzhou Bay. Sedimentation rate before 9000 years ago was rapid, 1.8 mm/year, but after that it was slowed down to 1.3 mm/year. From 5000 to 2000 years ago, quick lowering of lake level or rapid emergence happened two to three times.
Diatom and foraminifer analyses showed the same changing trend of marine transgression and regression generally, however in some horizons they showed different trends, which possibly indicate the difference in response time to rapid environmental changes depending on biota.
During this research term, paleoenvironmental data of each core were mainly checked, but it is not enough to correlate the results from cores analysed. In near future compiling a great amount of paleoenvironmental data obtained, will make the processes of environmental evolution in Taihu area and establish an evolution model in Yangtze Delta.

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] Kunihiko ENDO et al.: "Environmental Changes in the Latest Pleistocene and Holocene in Taihu and the Surrounding Plain. Eastern China -in Comparison with Kanto Plain. Japan-"「水環境と人間」,日本大学. 105-122 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 片瀬隆雄,水谷広,遠藤邦彦: "太湖コアの化学分析"「水環境と人間」,日本大学. 65-74 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 小森次郎,遠藤邦彦,糸田千鶴 他: "長江デルタ南西部の堆積物に記録された地磁気伏角の永年変化"「水環境と人間」,日本大学. 75-87 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 松岡東香,岡田佑子,濱田誠一,糸田千鶴: "太湖コアの磁気的性質と堆積環境変遷"「水環境と人間」,日本大学. 89-95 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kunihiko Endo: "Linkage in Holocene and Latest Pleistocene Environmental Changes: Mainly in the Case of Western China and Japanese Islands"Bulletin of the National Museum of Japanese History. 81. 143-156 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Guijin Mu,Shun Yan and Kunihiko Endo: "Environmental Changes of the Jungar Basin during the Last 10ka"Bulletin of the National Museum of Japanese History. 81. 157-166 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Lizhong Yu,Kunihiko Endo et al.: "Soft Sediment in Taihu Lake and its Palaeoenvironmental Indications"Bulletin of the National Museum of Japanese History. 81. 199-208 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Xiangming Zheng,Kunihiko Endo et al.: "Holocene Evolution and Neolithic Settlement upon the Southern Yangtze Delta Plain, East China"Bulletin of the National Museum of Japanese History. 81. 185-198 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kunihiko ENDO et al.: "Environmental Changes in the Latest Pleistocene and Holocene in Taihu and the Surrounding Plain, Easter China -in Comparison with Kanto Plain, Japan-""Water Environments and Mankind", Nihon University. 105-122 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Takao KATASE, Hiroshi MIZUTANI and Kunihiko ENDO: "Stable Isotope Analysis of Sediment Core from Lake Taihu and Soils from Wenis Le Yuan, Qing Pu, China""Water Environments and Mankind", Nihon University. 65-74 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Jiro KOMORI, Kunihiko ENDO, Chizu Itota et al.: "Secular Variation of Geomagnetic Inclination Recorded in Sediments from Southwestern Yangtze Delta, China""Water Environments and Mankind", Nihon University. 75-87 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Haruka Matsuoka, Yuko OKADA, Seiichi HAMADA, Chizu ITOTA: "Paleoenvironmental Study of Sediments at the South Area of Lake Tai-hu by Rock Magnetism""Water Environments and Mankind", Nihon University. 89-95 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kunihiko Endo: "Linkage in Holocene and Latest Pleistocene Environmental Changes : Mainly in the Case of Western China and Japanese Islands."Bulletin of the National Museum of Japanese History. 81. 143-156 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Guijin Mu, Shun Yan and Kunihiko Endo: "Environmental Changes of the Jungar Basin during the Last 10ka."Bulletin of the National Museum of Japanese History. 81. 157-167 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Lizhong Yu, Kunihiko Endo ea al.: "Soft Sediment in Taihu Lake and its Palaeoenvironmental Indications."Bulletin of the National Museum of Japanese History. 81. 199-208 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Xiangming Zheng, Kunihiko Endo et al.: "Holocene Evolution and Neolithic Settlement upon the Southern Yangtze Delta Plain, East China."Bulletin of the National Museum of Japanese History. 81. 185-198 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Endo,K. et al.: "Environmental changes in the Latest Pleistocene and Holocene in Taihu and the surrounding plain, Eastern China -in comparison with Kanto Plain, Japan- "「水環境と人間」,日本大学. 105-122 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 片瀬隆雄,水谷広,遠藤邦彦: "太湖コアの化学分析"「水環境と人間」,日本大学. 65-74 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 小森次郎,長谷川史彦,遠藤邦彦,兪立中,鄭祥民,糸田千鶴: "長江デルタ南西部の堆積物に記録された地磁気伏角の永年変化"「水環境と人間」,日本大学. 75-87 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 松岡東香,岡田佑子,濱田誠一,糸田千鶴: "太湖コアの磁気的性質と堆積環境変遷"「水環境と人間」,日本大学. 89-95 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 小森次郎・遠藤邦彦ほか: "中国太湖南岸の完新世堆積物の岩石・古地磁気分析" 日本第四紀学会講演要旨集. 28号. 112-113 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 村田泰輔・遠藤邦彦ほか: "珪藻化石分析に基づく中国・太湖の過去1万年の古環境変遷" 日本第四紀学会講演要旨集. 28号. 114-115 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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